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[settings] Adapt user interface to fit display size 

Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/17/head
Michael Brown 2013-12-06 16:44:35 +00:00
parent 54c5d08df1
commit b6c867713b
1 changed files with 44 additions and 29 deletions
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73
src/hci/tui/settings_ui.c
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@ -45,25 +45,30 @@ FILE_LICENCE ( GPL2_OR_LATER );
#define CPAIR_URL 5
/* Screen layout */
#define TITLE_ROW 1
#define SETTINGS_LIST_ROW 3
#define SETTINGS_LIST_COL 1
#define SETTINGS_LIST_ROWS 15
#define INFO_ROW 19
#define ALERT_ROW 22
#define INSTRUCTION_ROW 22
#define TITLE_ROW 1U
#define SETTINGS_LIST_ROW 3U
#define SETTINGS_LIST_COL 1U
#define SETTINGS_LIST_ROWS ( LINES - 6U - SETTINGS_LIST_ROW )
#define INFO_ROW ( LINES - 5U )
#define ALERT_ROW ( LINES - 2U )
#define INSTRUCTION_ROW ( LINES - 2U )
#define INSTRUCTION_PAD " "
/** Layout of text within a setting widget */
struct setting_row_text {
char start[0];
char pad1[1];
char name[15];
char pad2[1];
char value[60];
char pad3[1];
char nul;
} __attribute__ (( packed ));
#define SETTING_ROW_TEXT( cols ) struct { \
char start[0]; \
char pad1[1]; \
union { \
char settings[ cols - 1 - 1 - 1 - 1 ]; \
struct { \
char name[15]; \
char pad2[1]; \
char value[ cols - 1 - 15 - 1 - 1 - 1 - 1 ]; \
} setting; \
} u; \
char pad3[1]; \
char nul; \
} __attribute__ (( packed ))
/** A setting row widget */
struct setting_row_widget {
@ -117,6 +122,7 @@ struct setting_widget {
*/
static unsigned int select_setting_row ( struct setting_widget *widget,
unsigned int index ) {
SETTING_ROW_TEXT ( COLS ) *text;
struct settings *settings;
struct setting *setting;
struct setting *previous = NULL;
@ -171,13 +177,20 @@ static unsigned int select_setting_row ( struct setting_widget *widget,
init_editbox ( &widget->row.editbox, widget->row.value,
sizeof ( widget->row.value ), NULL, widget->row.row,
( widget->row.col +
offsetof ( struct setting_row_text, value ) ),
sizeof ( ( ( struct setting_row_text * ) NULL )->value ),
0 );
offsetof ( typeof ( *text ), u.setting.value ) ),
sizeof ( text->u.setting.value ), 0 );
return count;
}
/**
* Copy string without NUL termination
*
* @v dest Destination
* @v src Source
* @v len Maximum length of destination
* @ret len Length of (unterminated) string
*/
static size_t string_copy ( char *dest, const char *src, size_t len ) {
size_t src_len;
@ -194,7 +207,7 @@ static size_t string_copy ( char *dest, const char *src, size_t len ) {
* @v widget Setting widget
*/
static void draw_setting_row ( struct setting_widget *widget ) {
struct setting_row_text text;
SETTING_ROW_TEXT ( COLS ) text;
unsigned int curs_offset;
char *value;
@ -206,24 +219,26 @@ static void draw_setting_row ( struct setting_widget *widget ) {
if ( widget->row.settings ) {
/* Construct space-padded name */
curs_offset = ( offsetof ( typeof ( text ), name ) +
string_copy ( text.name, widget->row.value,
sizeof ( text.name ) ) );
curs_offset = ( offsetof ( typeof ( text ), u.settings ) +
string_copy ( text.u.settings,
widget->row.value,
sizeof ( text.u.settings ) ) );
} else {
/* Construct dot-padded name */
memset ( text.name, '.', sizeof ( text.name ) );
string_copy ( text.name, widget->row.setting.name,
sizeof ( text.name ) );
memset ( text.u.setting.name, '.',
sizeof ( text.u.setting.name ) );
string_copy ( text.u.setting.name, widget->row.setting.name,
sizeof ( text.u.setting.name ) );
/* Construct space-padded value */
value = widget->row.value;
if ( ! *value )
value = "<not specified>";
curs_offset = ( offsetof ( typeof ( text ), value ) +
string_copy ( text.value, value,
sizeof ( text.value ) ) );
curs_offset = ( offsetof ( typeof ( text ), u.setting.value ) +
string_copy ( text.u.setting.value, value,
sizeof ( text.u.setting.value )));
}
/* Print row */